Burner and method for partially oxidizing liquid, carbon-containing fuel

Abstract

A burner for the partial oxidation of liquid, carbonaceous fuel with steam and an oxygen-containing gas a well as the process in which this burner is used, wherein the parts of the outlet orifice of the burner directed towards the combustion chamber are wholly or partly provided with a coating or with a diffusion layer for protection against thermal load and/or corrosion.

1 . A burner for the partial oxidation of liquid, carbonaceous fuel with steam and an oxygen-containing gas, whose outlet orifice is directed into a combustion chamber, wherein the parts of the outlet orifice directed towards the combustion chamber are wholly or partly provided with a coating or with a diffusion layer for protection against thermal load and/or corrosion. 
     
     
         2 . The burner according to  claim 1 , wherein the coating consists of an adhesive layer and a heat insulation layer, which each are applied by a thermal spraying method, such as plasma spraying, wherein the adhesive layer consists of the metal mixture MCrAlY (M represents at least one of the elements Ni, Co, Pt or Pd) and wherein the heat insulation layer preferably consists of an oxidic spraying material, in particular of ZrO 2 . 
     
     
         3 . The burner according to  claim 1 , wherein by alitizing, chromizing or siliconizing merely a diffusion layer is produced in the surface of the workpiece. 
     
     
         4 . The burner according to  claim 1 , wherein the parts of the outlet orifice directed towards the combustion chamber are wholly or partly provided with a combination of a coating for protection against thermal load and a diffusion layer. 
     
     
         5 . A process for the partial oxidation of liquid, carbonaceous fuel with steam and an oxygen-containing gas, wherein at least one burner according to  claim 1  is used.